Stroker motor from PA showed up yesterday with big thanks to K2750tracy for getting the stuff and shipping it to me. Big kuddos to his shipping job in a wooden crate! Never gotten a motor shipped to me packed this well.
Now on to the goods. F2 based motor, has a 74mm stroked crank, which I have never heard of but I measured it out last night. They used stock length Carillo rods with stroker 73mm Arias pistons along with a .9" spacer under the RC big block. Works out to 1234cc. Never seen a sohc built that big.
Big stroke but was hoping they used shorter rods instead of the stroker pistons...as you can see the pin is into the oil ring which can lead to oil usage, but I guess it was a drag only motor so it wasnt too terrible. Need to see if I can source some new rings as they have an odd combination of thicknesses of rings. Or will keep my eyes open for shorter rods.
Biggest reason for wanting the motor was the RC block. 73mm and in good shape. Also has ported f2 head which I haven't looked at yet but will look at later. Also Mikuni carbs in with the parts, need to check them out as well.
Now on to the goods. F2 based motor, has a 74mm stroked crank, which I have never heard of but I measured it out last night. They used stock length Carillo rods with stroker 73mm Arias pistons along with a .9" spacer under the RC big block. Works out to 1234cc. Never seen a sohc built that big.
Big stroke but was hoping they used shorter rods instead of the stroker pistons...as you can see the pin is into the oil ring which can lead to oil usage, but I guess it was a drag only motor so it wasnt too terrible. Need to see if I can source some new rings as they have an odd combination of thicknesses of rings. Or will keep my eyes open for shorter rods.
Biggest reason for wanting the motor was the RC block. 73mm and in good shape. Also has ported f2 head which I haven't looked at yet but will look at later. Also Mikuni carbs in with the parts, need to check them out as well.